Just me world

You give your heart to someone and you hope they will not play around with it. But what do you get some one jerking you around like your heart is a toy for them to play with.
And you cannot stop them, even though you want to, you know this should be a dead issue. They leave then they come back looking to use you again, after giving you false hope so what do you do if your smart you cut them off and never talk to them again.